US Patent 10509569 System and method for adaptive command fetch aggregation

Systems and methods for adaptive fetch coalescing are disclosed. NVM Express (NVMe) implements a paired submission queue and completion queue mechanism, with host software on the host device placing commands into the submission queue. The host device notifies the memory device, via a doorbell update, of commands on the submission queue. Instead of fetching the command responsive to the doorbell update, the memory device may analyze one or more aspects in order to determine whether and how to coalesce fetching of the commands. In this way, the memory device may include the intelligence to coalesce fetching in order to more efficiently fetch the commands from the host device.